Why Chanel's little black dress has never gone out of fashion ABC listen A century ago, Coco Chanel redefined fashion with one bold creation: the Little Black Dress!, What critics once called too plain became the very definition of elegance, versatility and power., Today, Black Embellished Feather Detail Mini Dress PrettyLittleThing The first little black dress designed by Coco Chanel ushered in the long reign of a fashion staple.